Ricoh infotec 3671F Service Manual page 171

TROUBLESHOOTING
COPY QUALITY TROUBLESHOOTING
7.1.9. Black Dots/Spots
Possible Cause (Scanner)
•
Dust on the exposure glass.
Action:
•
Clean the exposure glass.
•
Try disabling MTF.
Possible Cause (Printer)
•
The drum surface is damaged (this is likely if the dots appear at 94.2
mm intervals).
Action:
•
Replace the DTM.
7-8
July 30th, 1996
H516T502.wmf